Roving traverse mechanism for spinning frames



Dec. 3, 1929. J. A. KOOISTRA 1,737,592

ROVING TRAVERSE MECHANISM FOR SPINNING FRAMES Filed Oct. 12, 1928 I 2 Sheets-Sheet 1 Q INVENTOR. JZ/m A. hool'sfra.

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Dec. 3, 1929. J. A. KOOISTRA ,7 7,59

ROVING TRAVERSE MECHANISM FOR SPINNING FRAMES Filed Oct. 12, 1928 2 Sheets-$heet 2 K mmzmi N. n z a, 3: E; H H

. II S I 1 '3 I a i: I I I 'mi INVENTOR i John A. Koo

Patented Dec. 3, 1929 UNITED STATES JOHN A. KOOISTRA, F WHITINSVILLE,

PATENT OFFICE v MASSACHUSETTS, ASSIGNOR TO WHITIN CHUSETTS "ROVING TRAVERSE MECHANISM FOR SPINNING FRAMES Application filed October 12, 1928. Serial No. 312,130.

This invention relates to a spinning frame and particularly to a type of spinning frame in which each yarn thread is drawn axially through a rapidly rotating twisting head.

Such machines are commonly used in spinning wool yarn and also in producing very soft twisted cotton yarn. The roving is taken from the yarn spool or beam by a pair of feed rolls and is drawn through the twister heads by the action of suitable drawing rolls. The yarn approaches the feed rolls through yarn guides commonly mounted on a traverse rod. The twister heads are mounted. to rotate on fixed vertical axes and special provision has been heretofore made for axially reciprocating the drawing rolls relatively to the twister heads to distribute the travel of the yarn over said rolls and to prevent the rapid grooving of the rolls by the yarn.

Such mechanism forms the subject matter of a patent of S. H. Helland, No. 1,702,969 issued February 19, 1929. g

It is also essential that the wear of the roving on the upper or feed rolls be evenly distributed, and this result is commonly accomplished by reciprocating the roving traverse rods.

It is the general object of my invention 3 to provide improved mechanism for reciproeating the traverse rods in a spinning frame in which the lower drawing rolls are reciprocated axially.

A further object of my invention is to pro;

35 vide mechanism by which the traverse rods 45 larly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a front elevation of parts of a wool spinning frame embodying my imso provements; and

Fig. 2 is a sectional end elevation, taken along the line 2-2 in Fig.1.

Referring to the drawings, I have shown parts of a wool spinning machine comprising a frame 10 supportingroving stands 11 on which yarn'spools or beams 12 are'rotatably mounted and positioned for engagement on driving drums 13. Twister heads 15 are rotatably mounted in brackets 16 secured to a supporting rail twister 17.

Upper feed rolls 18 are rotatably mounted between the yarn spools 12 and the twister heads 15. One of the feed rolls 18 is positively rotated at suitable speed and the other feed roll rests by gravity on the driven feed roll and is rotated thereby. A yarn guide 20 is provided for each twister head 15, said yarn guides being mounted on a traverse rod 21 extendin lengthwise of the machine and slidable 1n suitable fixed supports.

Front and back drawing rolls and 31 are provided below the twister heads 15, and the yarn Y is delivered from the drawing rolls to the spinning rings 32 and bobbins 33.

The front drawing rolls 30 are positively driven through bevel gears 35 (Fig. 1) from a drive shaft 36. The connectionsibetween the gears 35 and the drawing rolls 30 include mechanism for reciprocating the drawing rolls axially, said mechanism including a casing 37 mounted on the drawing roll and containing a worm drive from the roll to a crank disc 38 having a crankpin 39 connected hy'a link 40 to a fixed pivot 41. As the drawing roll is rotated, the crank disc 38 is also rotated at greatly reduced speed, causing a slow axial reciprocation of the drawing roll, such reciprocation being permitted by a sliding joint in the driving connections between the drawing roll and the gears 35.

A rod 42 is also movable axially with the casing 37 and supports the stands or brackets 43 for the back drawing rolls 31.

By the mechanism described, the drawing rolls are reciprocated axially relative to the twister heads 15, thus distributing-the wear of the yarn over the rolls. For a more complete description of this mechanism for reciprocating the rolls, reference is made the axial movement of to the patent of Helland above identified.

In my improved machine, I attach an arm or extension .50 (Fig. 1) to the end of the back roll supportin rod 42 and pivotally connect the 'arm 50 att e point 51 to an arm 52 mounted on a cross shaft 53 and extending upwardly therefrom.

The cross shaft 53 extends transversely toward the center of the machine, as indicated in Fig. 2, and issupported in fixed bearings 55. A second arm 56 is secured to the cross shaft 53 and has an elongated slot 57 for a stud 58 forming the lower pivot of a connecting link 59'. The upper end of the link is pivoted on a stud 60 secured in a slot 61 in an arm 62 mounted on an upper cross shaft 64. Arms 65 extend upward from the cross shaft 64 and are pivoted at 66 to the traverse rod 21 previously described.

By these connections, the roving traverse rods 21 are reciprocated simultaneously with the drawing rolls 30 and '31 but in the opposite direction. Furthermore, by adjusting the positions of the studs 58 and 60 in the slots 57 and 61, the movement of the traverse rods may be adjusted in any appropriate relation to the movement of the drawing rolls.

I have thus rovided extremely simple mechanism b wh1ch the roving may be traversed at the feed rolls simultaneously with the traverse movement of the drawing rolls and by which the extent of traverse at the feed rolls mag be adjusted as desired.

aving thus described my invention and the advantages thereof, I do not wish to be wise than as set forth in I claim is:

1. In a spinning limited to the details herein disclosed, otherfi the claims, but what frame having twister heads, lower drawing rolls, upper feed rolls and a roving traverse rod therefor, in combination, means to reciprocate said drawin rolls axially, and connections between said reciprocating means and said traverse rod for reciprocating said rod in fixed relation to the axial movement of said drawing rolls.

2. In a spinning frame having twister heads, lower drawing rolls, upper feed rolls and a roving traverse rod therefor, in combination, rolls axially, connections between said reciprocating means and said traverse rod for re ciprocating said rod in fixed relation to the axial movement of said drawing rolls, and means to variabl" adjust the relative amount of movement of aid traverse rod.

3. In a spinning frame having twister heads, lower drawing rolls, upper feed rolls and a roving traverse rod therefor, in combination, means to reciprocate said drawing rolls axially, and connections between said reciprocating means and said traverse rod for reciprocatmg said rod in fixed relation to the axial movement of said drawing rolls, said connections comprising a plurality of links and levers formin a direct mechanical operating connection rom said drawing rolls to said traverse rod.

4. In a spinning frame having twister headsflower drawing rolls, upper feed rolls and a roving traverse rod therefore, in combination, means to reciprocate said'drawing rolls axially, and connections between said reciprocating means and said traverse rod for reciprocating said rod infixed relation to the axial movement of said drawing-rolls, said connections comprising a plurality of links and levers formin a direct mechanical operating connection from said drawing rolls to said traverse rod, certain of said levers having arms adjustable as to effective length by which the extend of movement of the traverse rod may be determined.

5. In a spinning frame having twister heads, lower front and back drawing rolls, a set of up er feed rolls. at each side 0 the machine and a separate roving traverse rod for each set of upper feed rolls, in combination, means to reciprocate said lower front and back drawing rolls axially, said means including a reciprocating rod, a lower transverse rock shaft, a rock arm onsaid shaft connected to said reciprocating rod, an upper transverse rock shaft, arms on said upper and lower rock shafts, a link connecting said arms by which said upper shaft is oscillated, and a pair of arms on said upper shaft connected to reciprocate said roving traverse rods at each side of said spinning frame.

In testimony whereof I-have hereunto afxed my signature.

JOHN A. KOOISTRA. 

